The big enhancement in WSN 10.0.8 is submenus support for the main menu in the menu manager. This solves the problem of having more pages than you have horizontal space for on the menu bar.

In new installations, the Options menu is a submenu associated to the member home menu, such that everything from the member home menu automatically shows on it. If you wish you can disassociate this and build a custom options submenu.

Bootstrap themes use the native bootstrap menu javascript and css. Non-bootstrap themes use superclick. Older wrapper templates may not support submenus until their menu template code is updated.